diff --git a/src/backend/access/nbtree/nbtutils.c b/src/backend/access/nbtree/nbtutils.c
index 8d047d8873f..878f4b2e7b8 100644
--- a/src/backend/access/nbtree/nbtutils.c
+++ b/src/backend/access/nbtree/nbtutils.c
@@ -1800,6 +1800,12 @@ _bt_advance_array_keys(IndexScanDesc scan, BTReadPageState *pstate,
 				all_required_satisfied = true,
 				all_satisfied = true;
 
+	/*
+	 * Unset so->scanBehind in case it is still set from back when we dealt
+	 * with the previous page's high key/finaltup
+	 */
+	so->scanBehind = false;
+
 	if (sktrig_required)
 	{
 		/*
@@ -1808,8 +1814,6 @@ _bt_advance_array_keys(IndexScanDesc scan, BTReadPageState *pstate,
 		Assert(!_bt_tuple_before_array_skeys(scan, dir, tuple, tupdesc,
 											 tupnatts, false, 0, NULL));
 
-		so->scanBehind = false; /* reset */
-
 		/*
 		 * Required scan key wasn't satisfied, so required arrays will have to
 		 * advance.  Invalidate page-level state that tracks whether the